@keyframes boom {
    10% {
        transform: scale(0.9,0.9);
    }
    20% {
        transform: scale(0.8,0.8);
    }
    40% {
        transform: scale(0.7,0.7);
    }
    50% {
        transform: scale(0.6,0.6);
    }
    70% {
        transform: scale(0.7,0.7);
    }
    80% {
        transform: scale(0.7,0.7);
    }
    80% {
        transform: scale(0.8,0.8);
    }
    100% {
        transform: scale(1,1);
    }
}

* {
    padding: 0;
    margin: 0;
}
body {
    background-color: #f1f1f1;
}
a {
    text-decoration: none;
}
li {
    list-style: none;
}
.w {
    width: 1200px;
    margin: 0 auto;
}
.a_black {
    color: black;
}
.a_white {
    color: white;
}
.a_black:hover,
.a_white:hover {
    color: red;
}
.red_font {
    color: red;
}
.gray_font {
    color: #ccc;
}
header {
    background-color: #000000;
    height: 60px;
    line-height: 60px;
}
.nav_head {
    height: 60px;
    position: relative;
}
.logo {
    font-size: 0;
    float: left;
    width: 154px;
    height: 24px;
    margin-top: 18px;
    background: url('img/nubia-logo.png') 0 -16px;
}
.head_links li{
    margin: 0 15px;
    display: inline-block;
}
.head_links {
    text-align: center;
    font-weight: 700;
}
.login_register {
    position: absolute;
    top: 0;
    right: 0;
}
.login_register li {
    display: inline-block;
    margin: 0 5px;
}
.login_register li:first-child {
    width: 30px;
    height: 30px;
    background: url('img/nubia-syb-all.png') 0 -30px;
    vertical-align: middle;
}
.nav_top {
    height: 87px;
    padding: 0 75px;
    box-sizing: border-box;
}
.nav_top ul li {
    width: 150px;
    text-align: center;
    float: left;
    box-sizing: border-box;
}
.nav_top ul li a {
    font-size: 12px;
    color: #666;
}
.nav_top ul li img {
    height: 65px;
}
.nav_top ul li:hover {
    border-bottom: 2px red solid;
}
.banner {
    height: 550px;
    background: url('img/banner.jpg') center;
    background-size: cover;
    margin-bottom: 15px;
}
.banner .w {
    height: 550px;
    position: relative;
}
.point {
    position: absolute;
    bottom: 20px;
    left: 50%;
    margin-left: -60px;
}
.point li {
    width: 15px;
    height: 15px;
    display: inline-block;
    margin: 0 5px;
    box-sizing: border-box;
    background-color: #ccc9cb;
    border-radius: 50%;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    -o-border-radius: 50%;
    transition: all 100ms linear;
    -webkit-transition: all 100ms linear;
    -moz-transition: all 100ms linear;
    -ms-transition: all 100ms linear;
    -o-transition: all 100ms linear;
}
.point li:hover {
    border: 2px solid red;
    border-radius: 50%;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    -o-border-radius: 50%;
}
.nav {
    height: 250px;
}
.nav ul li {
    width: 396px;
    height: 250px;
    margin-right: 5px;;
    float: left;
}
.nav li:nth-child(1) {
    background-image: url('img/video1.jpg');
    background-size: cover;
}
.nav li:nth-child(2) {
    background-image: url('img/video2.jpg');
    background-size: cover;
}
.nav li:nth-child(3) {
    background-image: url('img/video3.jpg');
    margin-right: 0;
    background-size: cover;
}
.play {
    width: 396px;
    height: 250px;
    text-align: center;
    color: white;
    background: rgba(1, 1, 1, .5);
    display: none;
}
.play img {
    margin-top: 80px;
    animation: boom 1.5s linear infinite alternate;
    -webkit-animation: boom 1.5s linear infinite alternate;
}
.play h3 {
    font-size: 16px;
    margin: 10px 0;
}
.play p {
    font-size: 14px;
}
.nav ul li:hover .play {
    display: block;
}
.news_product,
.jingxuan_peijian {
    height: 150px;
    text-align: center;
}
.news_product h1,
.jingxuan_peijian h1{
    font-weight: normal;
    font-size: 23px;
    margin-top: 55px;
    margin-bottom: 35px;
}
.good_phone {
    overflow: hidden;
}
.good_phone h3 {
    font-weight: 400;
}
.good_phone p {
    color: #ccc;
}
.no1_phone {
    height: 400px;
    background-color: #fff;
    position: relative;
    margin: 10px 0;
}
.no1_phone img {
    height: 280px;
    margin-top: 70px;
    margin-left: -170px;
    transition: all 700ms linear;
    -webkit-transition: all 700ms linear;
    -moz-transition: all 700ms linear;
    -ms-transition: all 700ms linear;
    -o-transition: all 700ms linear;
}
.no1_phone img:hover {
    margin-left: -70px;
}
.no1_script {
    height: 130px;
    width: 200px;
    position: absolute;
    top: 160px;
    right: 226px;
    text-align: center;
}
.no1_script h3 {
    font-size: 20px;
    color: black;
    font-weight: normal;
}
.no1_script p {
    margin:5px 0;
    color: #999;
}
.no1_script button,.no2_script button,.no3_script button {
    height: 36px;
    width: 112px;
    background-color: transparent;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 10px;
    -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
    -ms-border-radius: 10px;
    -o-border-radius: 10px;
    margin-top: 5px;
}
.no2_phone {
    width: 395px;
    height: 795px;
    float: left;
    margin-right: 10px;
    position: relative;
    text-align: center;
    overflow: hidden;
    background-color: #fff;
}
.no2_phone img {
    width: 90%;
    transition: all 800ms linear;
    -webkit-transition: all 800ms linear;
    -moz-transition: all 800ms linear;
    -ms-transition: all 800ms linear;
    -o-transition: all 800ms linear;
}
.no2_script {
    height: 130px;
    width: 200px;
    position: absolute;
    bottom: 15px;
    right: 100px;
    text-align: center;
}
.no2_phone img:hover {
   transform: scale(1.2,1.2); 
}
.no3_phone {
    width: 795px;
    height: 390px;
    float: left;
    margin-bottom: 10px;
    overflow: hidden;
    position: relative;
    background-color: #fff;
}
.no3_phone img {
    height: 90%;
    margin-left: 70px;
    margin-top: 20px;
    transition: all 800ms linear;
    -webkit-transition: all 800ms linear;
    -moz-transition: all 800ms linear;
    -ms-transition: all 800ms linear;
    -o-transition: all 800ms linear;
}
.no3_phone img:hover {
    margin-left: 0px;
}
.no3_script {
    position: absolute;
    width: 200px;
    height: 130px;
    bottom: 100px;
    left: 40px;
    text-align: center;
}
.no4_phone {
    width: 390px;
    height: 395px;
    float: left;
    margin-right: 10px;
    overflow: hidden;
    text-align: center;
    position: relative;
    background-color: #fff;
}
.no4_phone img,
.no5_phone img {
    width: 90%;
    transition: all 800ms linear;
    -webkit-transition: all 800ms linear;
    -moz-transition: all 800ms linear;
    -ms-transition: all 800ms linear;
    -o-transition: all 800ms linear;
}
.no5_phone {
    width: 395px;
    height: 395px;
    float: left;
    overflow: hidden;
    text-align: center;
    position: relative;
    background-color: #fff;
}
.no4_script {
    position: absolute;
    height: 130px;
    width: 200px;
    bottom: -50px;
    left: 100px;
}
.no4_phone img:hover,
.no5_phone img:hover {
    transform: scale(1.2,1.2);
    -webkit-transform: scale(1.2,1.2);
    -moz-transform: scale(1.2,1.2);
    -ms-transform: scale(1.2,1.2);
    -o-transform: scale(1.2,1.2);
}
.good_peijian {
    overflow: hidden;
    margin-bottom: 70px;
}
.good_peijian ul li {
    width: 292px;
    height: 300px;
    background-color: #fff;
    float: left;
    overflow: hidden;
    margin-right: 10px;
}
.good_peijian ul li:last-child {
    margin-right: 0;
}
.good_peijian ul li div {
    width: 100%;
    height: 250px;
    text-align: center;
}
.good_peijian ul li div img {
    height: 90%;
    transition: all 800ms linear;
    -webkit-transition: all 800ms linear;
    -moz-transition: all 800ms linear;
    -ms-transition: all 800ms linear;
    -o-transition: all 800ms linear;
}
.good_peijian ul li img:hover {
    transform: scale(1.2,1.2);
    -webkit-transform: scale(1.2,1.2);
    -moz-transform: scale(1.2,1.2);
    -ms-transform: scale(1.2,1.2);
    -o-transform: scale(1.2,1.2);
}
.good_peijian ul li p {
    text-align: center;
    font-size: 13px;
    color: #999;
}
footer {
    border-top: 1px solid #999;
    padding-top: 40px;
    box-sizing: border-box;
    height: 465px;
}
footer p {
    margin-bottom: 30px;
}
footer p a {
    color: #999;
}
footer p img {
    margin-right: 20px;
}
.links dl {
    float: left;
    margin-right: 280px;
    margin-bottom: 30px;
}
footer dl dt {
    color: #000;
    line-height: 35px;
}
.links dl dd {
    line-height: 25px;
    color: #999;
}
.links {
    overflow: hidden;
}
footer ul {
    width: 700px;
    height: 30px;
    float: left;
    vertical-align: middle;
}
footer ul li {
    float: left;
    vertical-align: middle;
    font-size: 14px;
    line-height: 30px;
}
footer ul li:nth-child(2n) {
    margin: 0 10px;
}
.logos {
    width: 500px;
    height: 30px;
    vertical-align: middle;
    float: right;
    background-color: skyblue;
}
.safe {
    font-size: 12px;
    color: #999;
}
.safe img {
    vertical-align: middle;
}